Hi! Let''s say I have an app that handles a TODO list. The list has finished and unfinished items. Now I want to add two virtual attributes to the list object; the count of finished and unfinished items in the list. I also need these to be displayed in the json output. How do I achieve that? Best Regards Linus -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/aFmyk69tHdUJ. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 31 July 2011 20:00, Linus Pettersson <linus.pettersson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Hi! > Let''s say I have an app that handles a TODO list. The list has finished and > unfinished items. Now I want to add two virtual attributes to the list > object; the count of finished and unfinished items in the list. I also need > these to be displayed in the json output. > How do I achieve that?Define two scopes on List that return the finished and unfinished items then use List.unfinished.count Colin> Best Regards > Linus > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-talk/-/aFmyk69tHdUJ. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
I already have done that, like this:
def unfinished_items
self.items.where("status = ?", false)
end
def finished_items
self.items.where("status = ?", true)
end
So I can use the List.unfinished.... But how do I add it as attributes to
the json output?
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Linus Pettersson <linus.pettersson@...> writes:> So I can use the List.unfinished.... But how do I add it as attributes tothe json output?> > >Seems you are confusing search patterns with object output. Your JSON output should already include a "status" field. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Acts_as_api will help you. It is a really awesome gem. 发自我的 iPhone 在 2011-8-1，5:38，Andrew Skegg <andrewskegg-BUHhN+a2lJ4@public.gmane.org> 写道：> Linus Pettersson <linus.pettersson@...> writes: > >> So I can use the List.unfinished.... But how do I add it as attributes to > the json output? >> >> >> > > Seems you are confusing search patterns with object output. Your JSON output > should already include a "status" field. > > > > -- > You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. > For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en. >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
Well, yes but that''s not the point. Items have a status field. Lists has many items. When displaying a List as JSON I want it to have an attribute that counts how many finished items there are in the list and how many unfinished items there are in the list. The above methods only fetches the items, and I''d have to count the result of that of course. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/gy0mFW1iV44J. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
class TodosController < ApplicationController
def show
@todo = Todo.find(params[:id])
respond_to do |format|
format.json { render_for_api :public, :json => @todo }
end
end
end
class Todo < ActiveRecord::Base
has_many items
acts_as_api
api_accessible :public do |t|
t.add "items.finished_items.all", :as => finished_items
t.add "items.unfinished_items.all", :as => unfinished_items
t.add "items.finished_items.count", :as =>
num_of_finished_items
t.add "items.unfinished_items.count", :as =>
num_of_unfinished_items
end
end
class Item < ActiveRecord::Base
belongs_to todo
scope :finished_items, where(:status => ''finished'')
scope :unfinished_items, where(:status => ''unfinished'')
acts_as_api
end
On Mon, Aug 1, 2011 at 11:49 PM, Linus Pettersson <
linus.pettersson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Well, yes but that''s not the point.
>
> Items have a status field. Lists has many items.
> When displaying a List as JSON I want it to have an attribute that counts
> how many finished items there are in the list and how many unfinished items
> there are in the list. The above methods only fetches the items, and
I''d
> have to count the result of that of course.
>
> --
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> "Ruby on Rails: Talk" group.
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>
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>
--
Tower He
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hi.. i got prob with creating mailer in rails 3 i used rails g mailer UserMailer.. .. how to define method in usermailer....?n cal that method..? On Mon, Aug 1, 2011 at 12:44 AM, Colin Law <clanlaw-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org> wrote:> On 31 July 2011 20:00, Linus Pettersson <linus.pettersson-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > wrote: > > Hi! > > Let''s say I have an app that handles a TODO list. The list has finished > and > > unfinished items. Now I want to add two virtual attributes to the list > > object; the count of finished and unfinished items in the list. I also > need > > these to be displayed in the json output. > > How do I achieve that? > > Define two scopes on List that return the finished and unfinished items > then use > List.unfinished.count > > Colin > > > Best Regards > > Linus > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Ruby on Rails: Talk" group. > > To view this discussion on the web visit > > https://groups.google.com/d/msg/rubyonrails-talk/-/aFmyk69tHdUJ. > > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > > To unsubscribe from this group, send email to > > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > > For more options, visit this group at > > http://groups.google.com/group/rubyonrails-talk?hl=en. > > > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > >-- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 4 August 2011 09:28, Annapoorna R <prapoorna.r-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> hi.. > i got prob with creating mailer in rails 3 > i used rails g mailer UserMailer.. .. how to define method in > usermailer....?n cal that method..?What has that got to do with the subject of this thread, which is Add virtual attribute? It is best to start a new thread for a new subject, with a subject line that matches the question. Colin -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.